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milliroentgen

[mil-uh-rent-guh n, -juh n, -ruhnt-] /ˈmɪl əˌrɛnt gən, -dʒən, -ˌrʌnt-/
noun
1.
a unit of radiation equal to one thousandth of a roentgen.
Abbreviation: mR, mr.
Origin of milliroentgen
1950-1955
1950-55; milli- + roentgen
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Historical Examples
  • A one-hour visit to the inner fenced area will result in a whole body exposure of one-half to one milliroentgen.

    Trinity [Atomic test] Site White Sands Missile Range Public Affairs Office

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